Crouzet GN Board (GNB) SIP Solid State Relays (SSRs) are PCB mount devices with single-phase AC output. Crouzet GNB SIP SSRs offer 4A output current as well as 12VAC to 275VAC, 12VAC to 460VAC, or 24VAC to 600VAC output voltage ranges. The series comes in a classic SIP package for PCBs and provides zero cross and special zero cross switching.